Mold for typographic machines



Feb. '6, 1923.

2 SHEETS SHEET 1.

faz/enla/ F W LETSCH MOLD FOR TYPOGRAPHICAL MACHINES.

URIGINAL man MAR. 15. 1918.

Feb. 6, 1923. 11,444,254. F. w. LETSCH.

MOLD FOR TYPOGRAPHICAL MACHINES.

ORIGINAL FILED MAR.15, 1918. 2 SHEETS-SHEET 2- [anemia/- Patented Feb. 6, 1923.

ranger PTENT @FFiQlhl.

' FREDERICK W. LETSCH, 0F BALTIMORE, MARYLAND.

MOLD FOR TYPOGRAPI-IIC MACHINES.

Original application filed March 15, 1918, Serial No. 222,760. Divided and this application filed July 21,

T 0 all whom it may 007%06771 Be it known that i, FREDERICK W. Larson, a citizen of the United States, and residing at Baltimore city, State of Maryland, have invented certain new and useful Improvements in Molds for Typographic Machines, of which the following is a specification.

This invention relates to a mold for typographic machines and particularly machines of the kind disclosed in my copending application, Serial No. 222,760, filed March 15, 1918, of which the present application is a division.

It is the object of the invention to provide a molding mechanism having fixed and movable mold blocks normally held separated with a suitable body piece arranged between them and also having means for clamping the movable block against the body piece, the body piece being adjustable for casting lines of dilferent lengths and movable transversely of the mold to eject the cast slugs or linotypes therefrom. A further object is to provide effective means for securely closing the end of the mold during the casting operation so as to avoid the escape of metal from. the mold cavity. A still further object is to provide a mechanism of the kind referred to which is simple and positive in operation and which will serve to accurately form the slugs or linotypes and eject the same after the casting operation is completed.

The invention in one specific embodiment is described in the following specification and illustrated in the accompanying drawings in which:

Figure 1 is a front elevation of the mold and other parts of the machine directly cooperating therewith;

Figure 2 is a longitudinal section taken on the line between the upper and lower mold blocks of Figure 1, certain parts appearing in elevation;

igure 3 is a detailed sectional View on the line 33 of Figure 1;

Figure 4 is a detailed sectional view on the line 44 of Figure 1; and

Figure 5 is a detailed view showing principally the means for operating certain parts of the mechanism.

Referring to the drawings in detail 10/ machine.

Serial No. 397,884.

represents a lower fixed mold block cooperating with which is an upper movable mold block 11. The lower mold block 10 is secured in any suitable manner as by screws 10 to a fixed part of the framework of the The upper mold block 11 has aslight vertical movement, being provided with elongated openings 11 in which screws 12 are mounted, these screws being also secured in a fixed part of the framework of the machine.

Arranged between the upper and lower mold blocks is a body piece 13 which is in the form of a horizontal blade, this blade being secured to a bar 14. The body piece 13 serves to close the right hand end of the mold during the casting operation and during such operation the line of assembled matrices is clamped between the end of the bar 14 and body piece 13 and a projection hereinafter referred to on another part of the mechanism. An end gate 15 is arranged at the end of the mold, this gate being vertically movable to close and open the left end of the mold. The end gate 15 is operated in the following manner: A slide 16 is arranged above the upper mold block and is mounted in fixed guideways 17. The end gate is connected to the slide 16 by a link 18 so that the end gate is operated directly by the slide, the link 18 being connected to a spring pressed plunger 18 arranged in the slide by means of which the link is yieldingly held in its lowermost position. The end gate 15 is provided wlth a projection 15 which constitutes an abutment against which the matrlces are clamped during the casting operation.

Beneath the end gate 15 there is arranged a vertically sliding bridge 15 which is normally pressed upward by a spring 15 and limited in its upward movement by a screw 15 so that when moved to its upper position by the spring the upper surface of the bridge registers with the upper surface of the lower mold block 10 and forms a platform over which the cast slugs or bars are moved from the mold into other parts of the machine.

In order to hold the end gate 15 securely against the mold during the casting operation there is provi an and gate clamp 19 which is operated by means of an eccentric which is pivoted about a screw 21 secured to a fixed part of the machine. The eccentric 20 is provided with an arm. 22 wh ch is connected through the medium of a sprmg link 23 with the slide 16 above described.

At the righthand end of the slide 16 there is provided a projection 2a which engages a plunger secured to the upper mold block 11. The projection 24: is spring pressed downward by a spring 26 mounted in the slide 16 so that such projection can yield when it noves downwardly into contact with the plunger Surrounding; the plunger is a spring 27 which normally holds the plunger and upper mold block in a raised position so that pressure on the body piece 13 is relieved it being understood that when the slide 16 carrying the projection 24: is moved downwardly the upper mold block l1 willbe forced down toward the lined mold block '10 and against the body piece 13 arranged between said blocks. 7 The slide 16 is moved up and down by a lever 30 shown in. dotted lines in Figure 1 which is pivoted to a fixed part oi the machine. This lever carries a block 31 operating in a slot 82 in the slideilh. The lever 80 is operated by a link 33 which .is connected to a cam lever 3st havin a roller 35 running in a groove in a cam 36 on the main cam shaft of the machine. the levers 30 and 3% work in planes at right angles to each other the link 33 is preferably connected to them by universal joints as shown.

It will be understood that the body piece 13 may be adjusted so as to permit the casting of slugs or linotypes of different lengths and the mechanism for accomplishing this result will be briefly described. T he bar 1-1- is carried by a block 40 which slides between rails ll, 42 secured in fixed position upon the rigid plate or bracket 4-3. The bar 14. has a tongue 4% which enters a slot in the block 40 and is secured therein by a screw 45. The block 40, together with the bar i l and the body piece 13 is moved by means of a forked arm 46 which is operated by suitable cam mechanism secured to the main shaft of the machine.

The rearward or right hand. movement of the block and body piece which determines the length of the mold opening and of the slug or linotype, is limited by astepped cylinder 50 which may berotated to bring any one of the steps into line with the post 51 on the right hand end of the sliding block 40. such rotation of the stepped cylinder being' secured by means of gears 52 and sprocket chain 53 and shaft 54, which can be turned by means of a knob The length. of l1nes corresponding to the steps of the cylindrical blocs 50 are indicated on the .le 56 attached to the shaft '54.

means or mechani'sln, not shown and masses by means ot a forked lever 46 which lever engages a roller arranged in the block 40.

The parts oi? the mechanism are so arranged that the lever 4A5 will normally hold the pin 51 on the block ll) a short distance tram the stepped block 50. hen the machine beits cycle of operations the lever do moves the pin 5i 2 nst the blocl: 50 which determines the length of the line of assembled matrices that can be inserted between the bar leiand the end 15. After the assembled line. is positioned before the mold and after the casting operation is completed and the upper mold block and end gate are raised the cast slug or linotype. by advance oi? the bar l i and the body piece 13 toward the left will be ejected from the mold over the bridge 15. The block 40 with the bar 1% and body piece 1'3 are then returned to their normal position.

it is apparent that various changes and modifications of the mechanism may be made without departing from the true spirit hr scope of the invention which is not limit} to the specific details herein described.

Having thus described the invention what I claim as new and desire to "ecure by Leters Patentis: A

1. In a typographic machine having a casting mechanism a mold con'iprising a fixed lower block, a vertically movable upper block, an adjustable body piece between saidblocks,spring operated means for normally relieving; the body piece (it pressure of the upper mold block. a slide and a spring pli'l'nger for yieldingly clamping said upper mold block upon the body piece during the casting operation.

in a typographic machine having a casting mechanism. the (aiinliination witl a mold comprising a tiized lower mold'blocln a vertically movable upper mold block, an intermediate body piece for closing one end of the mold, and a vertically movable end grate for closing the other end of the mold. of a common slide tor moving the end gate to close the mold and "for clai'nping the upper mold block upon the body piece, and means for reciprocating said slide. s

3. In a typographic,machine lie-vine a casting mechanism, the combination with a mold comprising a fixed lower mold block, a vertically movable upper mold block, an intermediate body piece for closing one end of the mold, and a vertically movable end gate for closing" the other end of the mold, of a common slide for moving the end gate to mold compr.

i .e mold, to, spring means carried by the slide clampi the upper mold blocl: on the bed;' piece, 11- s connected with t e slide for moving e-d gate, and edditionel means c rried by the slide for clamping the end against the mold blocks.

5. in pypograpl machine having a casting inec i 1e combination with o nold coirniisinq' ngper and lower blocks intermernte body piece, o't an end vertical y raliwle to close one o id of the mold dnrin. the casting operation, a

continna.- on of bottom of the mold cavity when e slug is being ejected from the mold, said oridge piece being aranged be ow i gate and movable out of the ata ridge piece adopted to term I end gate when the latter is movec. to close the mold, and a sprin" for returning; said bridge piece to its or nail 3osition alter the end is Withdrawn.

6. in a typographic machine having a. casting mechanism, the combination with n mold comprising upper and lower blOClIS and an intermediate body piece, of an end gate adjacent the open end of the mold end movable close the mold during the casting o ration, and spring operated bridge piece below the end gate, said bridge piece being normally aligned with the lower 5 ritace of the mold to sngport a sin being ejected from the mold and being .ig'Gd to yield when the end gate is moved into p sition to close the mold.

7. typographic machine having a casting: ia'iechanism, the combination with a viold comprising upper and lower blocks and intermediate body piece, an end gate vertically movable to close one end of the mold during; the casting operation, and e bridge piece adapted to form a continuat-ion of the bottom of the mold cavity when the ship; is eing' ejected from the mold, said bridge piece being separate from the end and arranged below the end gate and movable out of the path of the end .c ate oody piece to eject the cast slugs mold,

In a typographic machine havin the combination 0.

d lower :nold b ioer moi nping s. on the body piece a positioned by said moving said bod t com the mold.

10. In n typograph c machine, a mold comprising upper and lower blocks, an interoediete body piece, an end grate, means for moving the end gate to the opening; between. sold blocks, a resiliently mounted udge pioce arran-ed beneath the end I'D n and in the path of movement or"? the some, out means for clam -ng the end gate in position to close the opening; between said looks.

1. In a typographic machin, a mold co "vrislng n fixed low r mold block and a mow V oloclr, an end gate for closing; the opening oetween the ends of said blocks, a reciprocating slide, means carried by said slide for moving said end gate, and other means carried by said slide for yieldingly forcing said upper mold bloclr toward the lower mold bloclr es the end gate is moved downwardly.

12. in a. typographic machine, a mold CO 'lPllSiiiQ, upper and lower members, an intermediate body piece, an end gate. means list 3"() pen and close the end of the mold. and means for automatically clampi g the end costing operato in position during; the

for IZEISIRQ' and lowering the end 0 'tlOl, said last named means comprising; a d no; bloclr and an eccentric device :it'or said block laterally toward and from the end gate.

n e typographic machine. :1 mold comprising; o lined lower mold block, a. mom able upper mold block, an intermediat body piece, on end gate, a. clamp for holding said end gate in position during the casting operation, an eccentric for operating said clamp, means tor vieldin l 5 said upper mo d block toward block, and means mold J3 ior simultaneously. opersoid eccentric to clamp the end :4.

ii e typographic machine having a. inomanism, the combination oi a mold comprising a fixed mold block and a movable mold block, a body piece arranged between said blocks, a stepped positioni 4 said body piece to co 1 different lengths, means for tClJL ingt; said gauge, means for clamping sai movable mold bloclr on the body niece we ='"me is positioned by i moving said body piece to eject the cast slugs from the mold.

151 ln a typographic machine, in combination, a fixed lower mold block and 21V movable upper mold block, an intermediate body piece an end gate for closing the opening between said lOlOChS a clamp for holding saidend gate in position during the casting operation 2t vertically movable slide means Carried by said slide formoving said end 10 gate and operating said clamp, and other means Carried by said slide for yieldingly forcinp' said upper mold block toward the lower mold block.

In testimony whereof I aillx my signature. 15

FREDERICK W. LETSGH. 

